I have the Toyota auxiliary battery kit fitted with an AGM battery, its less than eighteen months old
Just returned from the Wheatbelt where it was 40+ every day, we did a fair bit of off road driving at slow speeds, my UHF is connected to the secondary battery and stopped working
Back home I measured the battery voltage at 6.14V which suggests it hasn't been charging, our home journey was 200Km+ at highway speeds
I have checked the physical condition of the entire installation and everything is fine
RedArc states they will work at full capacity at up to 55C, de-rate up to 80C and switch off at 85C
I suspect that it has shut down because of extreme heat, at a guess the engine compartment temperatures must have been well in excess of 100C+
Has anyone else experienced this?